Seiko Caliber 7800 Technical informationWatches with the 7800 movement7800-50097800-50197800-50297800-50397800-50497800-50597800-50697800-50797800-50847800-50897800-50997800-51097800-51197800-51297800-51397800-51497800-51597800-51697800-51797800-51897800-51997800-52097800-52197800-52297800-52397800-52497800-52597800-52697800-52897800-52997800-53097800-53397800-53497800-53597800-53697800-53797800-53897800-53997800-54097800-54197800-54297800-54397800-54497800-54597800-60097800-70097800-80097800-80197800-80297800-80397800-80497800-80597800-80697800-80897800-80997800-81097800-90097800-90197800-90297800-9039